Biological properties of a new class of [Mo2O2S2]-based thiosemicarbazone coordination complexes

•Investigation of biological properties a series of Mo2O2S2-thiosemicarbazone complexes.•A class of complexes better than Trolox for antixidant properties.•A strong structure–activity relationship.•Complexes with ligands displaying a phenol group kept free are very efficient for antitumoral activity.•Complexes with ligands displaying a pyridine group kept free are very efficient against bacteria and fungi.